Best AI Tutor for O-Level Subjects: ChatGPT, Gemini, or Wise Otter?

Students are increasingly relying on artificial intelligence (AI) tutors for their daily work.

- Sarah Koh

Besides mainstream tools such as Google's Gemini and OpenAI's ChatGPT, the latest contender in this space is The Wise Otter.

Created and launched in April by Singaporean developer Jotham Goh, 33, The Wise Otter incorporates grading criteria used in Singapore schools.

It can tackle primary school maths, as well as secondary school and junior college maths, English, physics, chemistry, and biology questions with step-by-step explanations.

The Sunday Times pitted the three chatbots against one another to check which AI tutor is the best for Singapore students.

For ChatGPT, ST included both GPT-40 and the latest GPT-5 models in this test.

GPT-5, launched on Aug 8, is said to hallucinate less and deliver more accurate answers compared with earlier editions.

The chatbots were asked to solve a random sample of questions found in past-year O-level papers and school examinations, including those that involve diagrams, across four subjects: maths, chemistry, physics, and English.

MATHS
The three bots answered correctly a probability question about a cumulative frequency diagram showing the time that adults spent on exercise in one week.

The bots also provided detailed explanations for their answers.

Asked to find the value of k (the minimum hours of weekly exercise for adults to stay fit), given that only 60 per cent of the adults in the diagram meet this minimum recommendation, GPT-40 and The Wise Otter failed to provide the right answer.

Only Gemini provided the correct value of k, which was 3.